I'm currently at 5 Halloween cookies, and 552 Wrinklers popped. On a different machine, I am seeing similar poor performance. According to the below chart, the odds of having this happen are negligable of me having so few Halloween cookies/ Wrinkler popped. I have traditionally been popping the wrinklers as soon as I see the CPS turn red, but I'm wondering if I'm just popping them too soon. Is there a certain amount of time that they need to suck, or am I just plain unlucky?